2689091 has 8 divisors (see below), whose sum is σ = 2872320. Its totient is φ = 2511432.

The previous prime is 2689079. The next prime is 2689103. The reversal of 2689091 is 1909862.

It is an interprime number because it is at equal distance from previous prime (2689079) and next prime (2689103).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2689091 - 2¹⁸ = 2426947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (359040).

2^2689091 is an apocalyptic number.

2689091 is a deficient number, since it is larger than the sum of its proper divisors (183229).

2689091 is a wasteful number, since it uses less digits than its factorization.

2689091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2689091 is about 1639.8448097305. The cubic root of 2689091 is about 139.0598744865.

The spelling of 2689091 in words is "two million, six hundred eighty-nine thousand, ninety-one".